// Copyright 2017 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "src/vector-slot-pair.h"

#include "src/feedback-vector.h"

namespace v8 {
namespace internal {

    VectorSlotPair::VectorSlotPair() = default;

    int VectorSlotPair::index() const
    {
        return vector_.is_null() ? -1 : FeedbackVector::GetIndex(slot_);
    }

    bool operator==(VectorSlotPair const& lhs, VectorSlotPair const& rhs)
    {
        return lhs.slot() == rhs.slot() && lhs.vector().location() == rhs.vector().location() && lhs.ic_state() == rhs.ic_state();
    }

    bool operator!=(VectorSlotPair const& lhs, VectorSlotPair const& rhs)
    {
        return !(lhs == rhs);
    }

    std::ostream& operator<<(std::ostream& os, const VectorSlotPair& p)
    {
        if (p.IsValid()) {
            return os << "VectorSlotPair(" << p.slot() << ", "
                      << InlineCacheState2String(p.ic_state()) << ")";
        }
        return os << "VectorSlotPair(INVALID)";
    }

    size_t hash_value(VectorSlotPair const& p)
    {
        return base::hash_combine(p.slot(), p.vector().location(), p.ic_state());
    }

} // namespace internal
} // namespace v8
